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package api
import (
"context"
"log"
"strings"
"time"
"github.com/kyren223/eko/internal/data"
"github.com/kyren223/eko/internal/packet"
"github.com/kyren223/eko/internal/server/session"
"github.com/kyren223/eko/pkg/snowflake"
)
const hex = "0123456789abcdefABCDEF"
func isValidHexColor(color string) (bool, string) {
if len(color) != 7 {
return false, "color must be hex with length of 7"
}
if color[0] != '#' {
return false, "color must start with '#'"
}
for _, c := range color[1:] {
if !strings.ContainsRune(hex, c) {
return false, "color must start with '#' and contain exactly 6 digits 0-9, a-f, A-F"
}
}
return true, ""
}
func IsNetworkAdmin(ctx context.Context, queries *data.Queries, userId, networkId snowflake.ID) (bool, error) {
userNetwork, err := queries.GetMemberById(ctx, data.GetMemberByIdParams{
NetworkID: networkId,
UserID: userId,
})
if err != nil {
return false, err
}
isAdmin := userNetwork.IsAdmin && userNetwork.IsMember && !userNetwork.IsBanned
return isAdmin, nil
}
func NetworkPropagateWithFilter(
ctx context.Context, sess *session.Session,
network snowflake.ID, payload packet.Payload,
filter func(userId snowflake.ID) (pass bool),
) packet.Payload {
var sessions []snowflake.ID
sess.Manager().UseSessions(func(s map[snowflake.ID]*session.Session) {
sessions = make([]snowflake.ID, 0, len(s)-1)
for key := range s {
if key != sess.ID() && filter(key) {
sessions = append(sessions, key)
}
}
})
queries := data.New(db)
sessions, err := queries.FilterUsersInNetwork(ctx, data.FilterUsersInNetworkParams{
NetworkID: network,
Users: sessions,
})
if err != nil {
log.Println("database error in propagate:", err)
return &ErrInternalError
}
for _, sessionId := range sessions {
session := sess.Manager().Session(sessionId)
if session == nil {
continue
}
timeout := 1 * time.Second
context, cancel := context.WithTimeout(context.Background(), timeout)
go func() {
defer cancel()
if ok := session.Write(context, payload); !ok {
log.Println(sess.Addr(), "propagation to", session.Addr(), "failed")
}
}()
}
return payload
}
func NetworkPropagate(
ctx context.Context, sess *session.Session,
network snowflake.ID, payload packet.Payload,
) packet.Payload {
return NetworkPropagateWithFilter(ctx, sess, network, payload, func(userId snowflake.ID) bool {
return true
})
}
func SplitMembersAndUsers(membersAndUsers []data.GetNetworkMembersRow) ([]data.Member, []data.User) {
members := make([]data.Member, 0, len(membersAndUsers))
users := make([]data.User, 0, len(membersAndUsers))
for _, memberAndUser := range membersAndUsers {
members = append(members, memberAndUser.Member)
users = append(users, memberAndUser.User)
}
return members, users
}
func UserPropagate(
ctx context.Context, sess *session.Session,
user snowflake.ID, payload packet.Payload,
) packet.Payload {
session := sess.Manager().Session(user)
if session == nil {
log.Println(sess.Addr(), "propagation to user", user, "failed due to session being nil")
return payload
}
timeout := 1 * time.Second
context, cancel := context.WithTimeout(context.Background(), timeout)
go func() {
defer cancel()
if ok := session.Write(context, payload); !ok {
log.Println(sess.Addr(), "propagation to", session.Addr(), "failed")
}
}()
return payload
}
const getNotificationsQuery = `-- name: GetNotifications :many
WITH
entries AS (
SELECT source_id, last_read
FROM last_read_messages
WHERE user_id = ?
),
permitted_frequencies AS (
SELECT f.id, m.is_admin
FROM frequencies f
JOIN entries e ON f.id = e.source_id
LEFT JOIN members m
ON m.user_id = ?
AND m.network_id = f.network_id
WHERE m.is_member = true AND (f.perms != 0 OR m.is_admin = true)
)
SELECT
e.source_id, e.last_read,
CASE
WHEN COUNT(m.id) = 0 THEN NULL
ELSE SUM(CASE WHEN (m.frequency_id IS NULL OR
m.ping = 0 OR (m.ping = 1 AND pf.is_admin = true) OR m.ping = ?) THEN 1 ELSE 0 END)
-- 0 is @everyone, 1 is @admins, otherwise it's user_id
END AS pings
FROM entries e
LEFT JOIN permitted_frequencies pf ON e.source_id = pf.id
LEFT JOIN messages m ON m.id > e.last_read
AND ((m.frequency_id = e.source_id AND pf.id IS NOT NULL) OR
(m.receiver_id = e.source_id AND m.sender_id = ?) OR
(m.sender_id = e.source_id AND m.receiver_id = ?))
GROUP BY e.source_id, e.last_read;
`
func getNotifications(ctx context.Context, userId snowflake.ID) (packet.NotificationsInfo, error) {
query := getNotificationsQuery
rows, err := db.QueryContext(ctx, query, userId, userId, userId, userId, userId)
if err != nil {
return packet.NotificationsInfo{}, err
}
defer rows.Close()
var items packet.NotificationsInfo
for rows.Next() {
var source *snowflake.ID
var lastRead *int64
var pings *int64
if err := rows.Scan(&source, &lastRead, &pings); err != nil {
return packet.NotificationsInfo{}, err
}
items.Source = append(items.Source, *source)
items.LastRead = append(items.LastRead, *lastRead)
items.Pings = append(items.Pings, pings)
}
if err := rows.Close(); err != nil {
return packet.NotificationsInfo{}, err
}
if err := rows.Err(); err != nil {
return packet.NotificationsInfo{}, err
}
return items, nil
}
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